Retort type oil burner



Get, 8, 1946, E. J. AsHBY RETORT TYPE OIL BURNER 2 Sheets-Sheet 1 Filed sept. 16, 1944 mmvrola 'Y ERNEST J. ASHBY FIG.

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RETORT TYPE OIL BURNER Filed Sept. 16, 1944 2 Sheets-Sheet 2 4 INVENTOR. ERNEST J. ASHBY BY ,lma

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Patented Oct. 8, 1946 UNiTsD STATES PATENT oFFics 2,409,095 RETORT TYPE UIL BURNER Ernest J. Ashby, Indianapolis, Ind. Application September 16, 1944, Serial No. 554,506

(Cl. S-63) 1 Claim.

This invention is directed to an improvement in oil burners, involving a completely portable unit designed for vaporizing and burning of waste oils, such as crank-case oil, but equally serviceable with other vaporizable fuels.

The burner of this invention is constructed in two substantially similar parts, capable of being assembled in burner forming relation or readily separable for convenient and easy cleaning of carbon and other deposits, and involving simple and easily operated mean-s for securing the parts in burner-forming relation.

An essential object of the invention is the provision of a burner of comparatively small size formed to present the maximum vaporizing and burning area when assembled, with the Vaporizing chamber formed to avoid the slightest interference with complete cleaning when necessary.

The burner as a whole comprises two identical annular sections, each of semi-circular form in cross section, with a central web in line with their inner edges, the sections being assembled with the nat edges in sealing contact by means of tie-bolts passing through the assembled Iwebs and through plates bearing against the rounded 'surfaces of both sections, the tie-bolts being headed at one end and formed at the opposite end for the reception of wedge keys to provide for a sealing connection of the rounded portions of the sections, while at the same time permitting simple and easy separation of the parts when necessary.

The invention in its preferred form is illustrated in the accompanying drawings, in which:

Fig. 1 is an end elevation of the improved burner.

Fig. 2 is an end elevation thereof.

Fig. 3 is a sectional view on the line 3-3 of Fig. 1.

Fig. 4 is an elevation of the burner, the sections being shown in open relation.

Fig. 5 is an elevation of the securing bolt.

Fig. 6 is an elevation of the wedge key.

The improved burner comprises two identically formed sections I and 2, of any desired or appropriate metal, formed to provide in each section a central elongated web 3 of relatively narrow width, with an opening Il, extending entirely around and conforming to the shape oi the web.

Each section thus presents an oval body with a central web and with a completely uninterrupted marginal area of semi-circular form in section, with the flat edge thereof in the plane of one face of the connecting web. The diameter of the rounded marginal area is materially greater than the width of the connecting web, and the free edges of the marginal areas are preferably formed with strengthening Webs 5.

The burner is assembled by bringing the straight edges and webs into contact, and such straight edges may, if desired, be formed for mating cooperation to assist in sealing the juncture. The openings 4 in the Iwebs 3 register when the 'burner parts are assembled, and plates 'I are provided to overlie and bear on a round portion of each section in line with the openings ll. Bolts are passed through holes in the plates 'I and through the registering holes 6 in the webs v3. One end of each bolt is headed at 9 and the opposite end formed with an opening to receive wedge keys I0, which after the application of the connection may be driven with sufficient tightness to insure mating and sealing contact of the edges of the sections.

As the plates 'I bear at their ends against the rounded surfaces of the sections they exert securing and sealing pressure at relatively remote points and against the rounded body of each section to insure complete connection and seal- The assembling of the sections is obviously simply and easily carried out, and when cleaning is desired the simple driving out of the wedges permits complete separation of the two parts and affords ready access to the interior. Furthermore, it will be noted that the interiors of the sections are rounded, hence avoiding any corners or other obstructions which might tend to prevent perfect cleaning of carbon or other deposit.

The wall of the lower portion of the unit on one side is formed with a series of holes or burner openings II, preferably between the plates l, such burner part being formed with additional holes I2 in each direction beyond the holes I I for admission of combustion-supporting air.

The upper portion of the unit is formed with an admission opening I3 to receive an oil-inlet pipe I4, leading from a suitable source of supply, and preferably having a suitable cut-oil, not necessary to illustrate. The pipe I4 has a wedged-shaped delivery end I4' within the burner. A starting pan I5 is carried by the lower section of the unit, in which readily inflammable fuel is placed and ignited for heating the unit to an oil-vaporizing temperature. The starting pan I5 may be secured by welding or otherwise securing the same to the web 5 of one section of the burner, as at I5'. A small quantity of oil is admitted to the interior of the unit through pipe I4, and the fuel in the starting pan is ignited. The flame from the small quantity of oil in the unit which is quickly vaporized by the starting fuel heat, is emitted through all holes II and I2, and when the unit is heated to vaporizing degree, the starting fuel is extinguished, or the holes I2 are temporarily blocked to cut off the ame, and the fuel to be burned is admitted through pipe I4, rapidly and completely vaporized and burned with the flame passing through the holes II, While the holes I2 admit air to support combustion. The interior of the burner unit is thus a mass of flame, raising the temperature of the unit to a degree to utilize it as a heating agent completely serviceable for cooking, exterior room heating, or for other uses where heat is desired.

It is important to note that the unit is of two similar parts, thus simple and economical to manufacture; that 'the parts are easily and quickly assembled in unit relation, and can be quickly and readily separated without tools or material labor when required for cleaning; and that the 'interior of the vaporizing chamber of the unit presents no corners or other obstructing parts to prevent thorough and quick cleaning of carb on or other clogging deposits.

The burner may be made in any sizes and of any appropriate metal. The vaporizing chamber may be of any size, so long as itis continuous and circular in section. The unit is completely portable and may be readily moved from place to place, as in a cooking stove or a heater cabinet, or wherever heat is desired.

It will be understood that the pan I5 may if desired be secured to the burner proper, and that such pan may be independently charged, or that oil may be admitted to the burner through the inlet pipe I4 and permitted to overflow through the holes I I and Iiow down che exterior of the burner into the pan I 5.

Having thus described claimed as new is:

An oil burner comprising a two part vaporizing chamber of circular form in cross section and oval form in elevation, both parts of the chamber being substantially similar in form. and of completely curved form throughout the interior of each part, the two parts of the chamber being hollow and iitted edge to edge to complete a substantially closed chamber, the cham- -ber having a central web in line with the junction of the meeting edges of the two parts of the chamber with the central web formed with an opening, a pin passed through said opening, a plate on each side of the chamber in parallelism with the central web through which the pin is passed, a head on one end of the pin to bear against one plate, and a wedge key to be passed through an opening in the pin to overly the other plate to secure the parts of the sectional chamber removably together, a supply pipe entering the chamber near the top thereof, the chamber being formed in parallelism with the central web and throughout the length thereof with openings for the escape of the vapor of the medium used. and further formed beyond such escape openings with further openings for the admission of air to the chamber, the wedge key maintaining the junction of the chamber parts under a sealing tension and permitting ready separation of the chamber parts when desired.

ERNEST J. ASHBY.

the invention, what is 

